51050070 has 48 divisors (see below), whose sum is σ = 133166592. Its totient is φ = 13568640.

The previous prime is 51050059. The next prime is 51050071. The reversal of 51050070 is 7005015.

It is a happy number.

It is a super-2 number, since 2×51050070² = 5212219294009800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51050071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33730 + ... + 35210.

It is an arithmetic number, because the mean of its divisors is an integer number (2774304).

Almost surely, 2^51050070 is an apocalyptic number.

51050070 is an abundant number, since it is smaller than the sum of its proper divisors (82116522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51050070 is a wasteful number, since it uses less digits than its factorization.

51050070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877 (or 1874 counting only the distinct ones).

The product of its (nonzero) digits is 175, while the sum is 18.

The square root of 51050070 is about 7144.9331697364. The cubic root of 51050070 is about 370.9642974146.

Adding to 51050070 its reverse (7005015), we get a palindrome (58055085).

The spelling of 51050070 in words is "fifty-one million, fifty thousand, seventy".